4R100 Tranny Service
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I checked another dealership nearby and they charge $115. However, I noticed that the manual and dipstick calls for Mercon, not Mercon V. I read a Ford TSB stating that Mercon V is approved for the 4R100 now. Does anyone know if mixing Mercon V with Mercon causes any problems? Also, anyone (having switched to Mercon V) had problems?
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Thx
Hotshot
Joined: Oct 2005
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From: Florida
I had my dealer do the service last year and I seem to remember I paid $150 but that was for a complete flush and refill with Synthetic.
I tow heavier (17000 GCW) much more miles than I drive unloaded...so for me the switch to synthetic made sense to help keep things "cooler". I have the 4R100 behind my V10. I have been pleased with the performance of the truck since the swap and I have towed thru the Black Hills, Big Horns and Rockies.
The "flush" is approved by Ford and covered under my 36/36000 bumper to bumper warranty if anything went wrong...the term "flush" usually brings on all kinds of opinions on both sides...I went with the MFG recommended method...that's all I know.
joe.
I tow heavier (17000 GCW) much more miles than I drive unloaded...so for me the switch to synthetic made sense to help keep things "cooler". I have the 4R100 behind my V10. I have been pleased with the performance of the truck since the swap and I have towed thru the Black Hills, Big Horns and Rockies.
The "flush" is approved by Ford and covered under my 36/36000 bumper to bumper warranty if anything went wrong...the term "flush" usually brings on all kinds of opinions on both sides...I went with the MFG recommended method...that's all I know.
joe.
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Did it myself
Too many questions, so I decided to do the tranny service myself. I'm glad I did. It wasn't difficult at all. Got a new filter and Mercon (that they supposedly don't use anymore) from the local ford shop, took the Ex to a local auto hobby shop, an hour later, I'm done. Cost me $55 and an hour.
I took a look at the filter with 50K miles on it. It looked pretty good. Didn't look hardly dirty.
I took a look at the filter with 50K miles on it. It looked pretty good. Didn't look hardly dirty.
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Post Fiend
Joined: Apr 2004
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From: North of Salt Lake City
I also changed my fluid and filter a few weeks ago. Same results. Not much different than changing engine oil, just more bolts to remove. The fluid was somewhat darkened but not to the point that it indicated a problem. I took the filter apart and could see no debris of any kind.
I was surprised at how little fluid I was able to put back in. I only had to replace about 10 quarts when I was expecting to put in about 14. I didn't drain the torque converter as I found out about that only after I was finished. I did have a hard time reading the dipstick though. It turns out I had initially overfilled the trans and had to remove about a quart or two to get the fluid level to read right on the dipstick. Now the fluid reads just barely above the cross-hatch marks.
I was surprised at how little fluid I was able to put back in. I only had to replace about 10 quarts when I was expecting to put in about 14. I didn't drain the torque converter as I found out about that only after I was finished. I did have a hard time reading the dipstick though. It turns out I had initially overfilled the trans and had to remove about a quart or two to get the fluid level to read right on the dipstick. Now the fluid reads just barely above the cross-hatch marks.
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Originally Posted by Jones02SportTrac
I was surprised at how little fluid I was able to put back in. I only had to replace about 10 quarts when I was expecting to put in about 14. I didn't drain the torque converter as I found out about that only after I was finished. I did have a hard time reading the dipstick though. It turns out I had initially overfilled the trans and had to remove about a quart or two to get the fluid level to read right on the dipstick. Now the fluid reads just barely above the cross-hatch marks.
While I was asking several local dealers their cost to do this service, one service advisor swore up and down that the 4R100 didn't have a filter. Needless to say, they lost all their credibility with me...I won't be using their service in the future.
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